Kenwood TS-780 manual 5-5CW Mode, Reception, Transmission, Use of RIT Switch, Use of NB Switch

5-5 CW Mode

Reception

Set the controls and switches as outlined in section on “FM Mode”, except that the MODE switch should be set to CW. For reception, proceed as follows:

1.Turn the POWER switch ON and adjust the AF GAIN control for suitable volume.

2.Turn the VFO knob slowly for the desired receive Signal

so that a 800 Hz beat is heard. In this way, the frequen- cy of your Station will coincide (Zero-in) with the fre- quency of your party’s Station.

Similarly, if your Party calls back with a 800 Hz beat in response to your call, it means that the party’s frequen- cy has coincided with your frequency.

Note:

The 800 Hz beat can be checked by using a frequency counter.

Transmission

Adjustments of the transmitter for CW Operation are basically the same as for FM Operation. The transceiver will be ready for use when adjusted in FM mode provided that the frequencies are the Same.

For transmission, set the controls and switches as outlined in section on “FM Mode”, except that the MODE switch should be set to CW and the meter switch to ALC/CEN. Connect your key to the KEY jack on the rear Panel.

1.Check to ensure that the MODE switch is set to CW. Set the standby switch to SEND and the ON AIR indicator will light. Under this condition, press the key down and the ALC meter should deflect. Set the standby switch back to REC Position.

Note:

If the key is not connected, the ALC meter will deflect when the standby switch is set to SEND.

2.Adjust the CAR LEVEL control

With the standby switch in the SEND Position, adjust the control so that the ALC meter deflects within the ALC zone when the key is pressed down.

Then, release the key. Set the standby switch back to REC Position and the meter switch to RF/S Position.

Note:

If there is a Change in ALC meter deflection, reset in the Same manner as in the SSB mode.

3.Adjust the side tone

The TS-780 has a built-in side tone circuit for monitor- ing your station’s CW Signal during transmission. To ad- just the side tone volume, open the top cover and turn the SIDE TONE control for desired level.

This adjustment should be made in receive mode with the key pressed down (standby switch in REC position), since, in so doing, the side tone circuit is activated.

Use of RIT Switch

For detailed information, refer to section on “FM Mode”. Use the RIT switch when your party’s frequency has deviated from 800 Hz or you wish to transmit with a different beat frequency.

Use of NB Switch

Refer to section on “SSB Mode”.

Use of RF GAIN Knob

Refer to section on “SSB Mode”.

Use of IF SHIFT Control

By using the IF SHIFT in conjunction with the RIT, tone quality can be adjusted.

Semi-Break-In Operation

The TS-780 is capable of semi-break-in Operation, in ad- dition to the usual CW Operation with the standby switch. The semi-break-in uses the side tone to activate the VOX circuit which switches to transmit when the key is pressed down and to receive when it isreleased. For semi-break-in Operation, set the MODE switch to CW and the VOX switch to ON. Other operating procedures are the same as for the usual VOX Operation (Refer to 5-6).

Side tone is heard

from

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Fig. 15 Semi-break-in Operation

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